Chart holder

ABSTRACT

A rotating drum mounted on a stand wherein charts containing columnar material are attached to the drum to be rotated past a horizontally extending indicator crossbeam. Indicia peculiar to the columnar chart is located on the crossbeam as well as movable indicators to allow interpolation of the columnar data or solutions of problems involving the columnar data. Heretofore, when large tables of columnar material, such as logarithmic tables, time tables or similar conversion tables, have been used it has been necessary to print these in large multipage books wherein continuity therebetween is lost in leafing through pages. Similarly, when arranging data in columns on many paged books it is often necessary to duplicate the horizontal and vertical entries into the data as well as some of the data to achieve some sort of continuity between subsequent pages of the data.

UnitedStates Patent [72] inventor Bruce V. Millam RR. #1 Box 40, Dayton, Oreg. 97114 [211 App]. No. 779,093 [22] Filed Nov. 26, 1968 [45 Patented Aug. 31, 1971 [54] CHART HOLDER 5 Claims, 4 Drawing Figs.

[52] [1.5. CI 40/68, 40/111, 235/87, 248/130 [51] Int. Cl G091 11/02 [50] Field of Search 235/795, 87;40/68, lll, 1l2,ll4;248/l57,l30,140, 142,

[56] References Cited UNITED STATES PATENTS 760,360 5/1904 Wiley 1. 40/68 X 1,306,379 6/1919 Horine 235/795 X 4/1949 Duhmert. 248/] 57 Primary Examiner-Robert W. Michell Assistant Examiner-L. R. Oremland- Att0rneys-Clarence A. OBrien and Harvey B. Jacobson ABSTRACT: A rotating drum mounted on a'stand wherein charts containing columnar material are attached to thedrum to be rotated past a horizontally extending indicator crossbeam. lndicia peculiar to the columnar chart is located on the crossbeam as well as movable indicators to allow interpolation of the columnar data or solutions of problems involving the columnar data.

Heretofore, when'large tables of columnar material, such as logarithmic tables, time tables or similar conversion tables,

have been used it has been necessary to print these in large multipage books wherein continuity therebetween is lost in leafing through pages. Similarly, when arranging data in columns on many paged books it is often necessary to duplicate the horizontal and vertical entries into the data as well as some of the data to achieve some sort of continuity between subsequent pages ofthe data.

PATENTEU AUB31 l97l 3,601,915

' sum 1 or 2 Fig.

Bruce V. Mil/am IN I I'IN'IUK A Manny:

' CHART HOLDER The present invention relates to a chart holder that comprises a large rotating drum mounted on a stand therefor. Theouter circumference of the drum is adapted to receive an en'- larged chart of columnar data or such tabulated indicia. The

columns is possible. The chart holder has a crossbar or beam arranged along the length of the surface of the drum to provide a ruling or reference line to be used with the data on the drum surface. Additional indicia for use in cooperation with indicia on the drum may be located on the cro'ssbaror beam with adjustable indicators and slides mounted o'n'the crossbeam to coordinate the indicia on the crossbeam withthe indicia on the drum surface.

It is therefore an object of this invention to provide asimple but unique holder for large charts of columnar-material.

It is a further object of this invention to provide a chart holder wherein large quantities of columnarmaterial can be presented in continuous uninterrupted form.

These together with other objects and advantages which will become subsequently apparent reside in the details'of con.- struction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to like parts throughout, and in which:

FIG. 1 is a front elevational view of the present chart holder.

FIG. 2 is a side elevational view of the device shown in FIG: 1

device shown in FIG. 2.

FIG. 4 is a disassembled perspective view illustrating the components of a channel member and slidable indicating means adapted to be mounted thereon.

Referring to FIGS. l-3, the invention is generally denoted by reference numeral which is seen from FIG. 2 to include a cylindrical hollow drum 12 having transverse closed ends 14 and 14'. Considering each transverseend of the chart holder, as seen in FIG. 1, a circular bracket 16 is mounted to the left end of the cylindrical drum 12 by means of suitable fasteners such as the bolts 18. A shaft. 20 which is integrally attached to.- the bracket projects perpendicularly outwardly therefrom. As will be appreciated from viewing FIG. 1, identical components FIG. 3 is an oppositely directed side elevational view of the,

tures 44 formed immediately adjacent the transverse ends which correspond to the apertures 40. Suitable fasteners are employed to connect the channel member 42 and the brace members34and 34.

A first hollow parallelepiped slidable member 45 including an arrow indicator 46 attached thereto is normally mounted on the channel member 42 and retained at a predetermined position along the channel by means of a setsc'rew 48 which is adapted to bearagainst a first flange 50 of the channel member 42. In operation of'the device, the sliding member 45 is positioned, as shown in FIG. 1, so that the arrow emphasizes a particular columnar data entry on a table or chart which is peripherally mounted to drum l2. It should be mentioned that although the present invention permits efficient utilization of large maps and other diagrammatic charts, the present sliding member is particularly useful when presenting tabulated or columnarized data.

A second hollowedsliding'member 52 includes, a straight I end'54-and a concave end 56. A double arrow indicator 58' having arrowheads oriented in opposite directions is suitably mounted to an outward edge 60 of the curved end 56 as seen in FIG. 4. The downward lateral side 61 of the second sliding member 52 mounts an additional arrow indicator or interl4-20, corresponding to components 14-20 are similarly assembledtqt he right end of the cylindrical drum 12.

In order to support drum 12, a frame is provided which in cludes two parallel and transversely aligned lazy tong type legs- 22 and 22. The legs include longitudinally aligned pivot. points which are connected by a suitable bar 24. A rectangular frame 26 is removably secured to the top end of the legs by.

cally oriented and longitudinally aligned bracezmembers 34 and 34 are suitably fastened to transverse edges of rectangular frame 26 at points intermediate the bearings and the frontward edge of the rectangular frame, as indicated by 36;

The upper edges 38 and 38' of the brace members 34 and 34' are downwardly inclined at an angle approximating 45 polating pointer 62 pointing downwardly. Another interpolating pointer or arrow indicator 64 which is mounted to the lower edge .of the straight end portion of sliding member 52 is disposed in parallel spaced relation to indicator 62. It will be noted that the arrowindicators 58 and 62 extend for a length approximately equal to one space unit corresponding to the width of a space on a chartmounted to drum cylinder 12. The last mentioned arrow indicator 64 is curved downwardly and inwardly so thatthe arrowhead thereof is spaced a distance approximately equal to one horizontal and one vertical unit from arrow indicator 58. It is preferred that arrow indicator 64 be fabricated from a flexible material. so that it may be deformed to point to one of several adjacently positioned columnar'entries on amounted chart. Reviewing FIG. 1, four horizontally spaced arrow indicators may be positioned in a manner emphasizing certain columnarized data entries on a chart positioned on drum l2. I

Referring to FIGS. 1 and 3, a handwheel 66 is axially mounted to an extended section of shaft 20. The handwheel permits manipulation of the cylindrical drum 12 to a desired position. In order to retain the drum in a preselected position, apertures 70 and 70' are formed in the lower end portion of brace members 34 and 34', respectively. An elongated bar 68 passes through the apertures so that it is rotatably mounted between the brace members; Viewing FIG. 1, the left end of the bar includes a handle portion 76 which allows an individual to rotate bar 68. The opposite end 72 includes a friction pad 74 or the like which normally engages the circumference of handwheel 68. Viewing FIG. 3, it will be noted that rotation of handle portion 76 causes disengagement between friction pad 74 and the handwheel thereby permitting free rotation of drum 12'by; manipulating handwheel 66. When a preselected position of the drum is acquired, corresponding to a particular position of a chart mounted thereon, the handle is released which urges the friction pad to reengage handwheel 66 thereby, once again", retaining the drum 12 in a preselected position. I

It is often desirable to head a chart by a heading, legend, set of numbers, or the like. This is easily accomplished by insertinga strip of paper or like material into the channel recess degrees. Apertures 40 are formed in the edges 38 and 38' in order to mount an elongated channel member 42 having aper-- defined in member 42. Thus, although the data on the chart mounted to drum 12 isrotatable, the heading remains in stationary view by virtue of its stationary mounting within the channel member.

The foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in theart, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly all suitable modifications and. equivalents may be resorted to, falling within the. scope of the invention.

the transverse ends of the cylinder and the frame to permit rotation of the cylinder, handle means connected to the transverse ends for facilitating rotation of the cylinder to a preselected position, brake means for retaining the cylinder in a preselected position, an elongated horizontally positioned member supported by the frame adjacent thecylinder, the member being disposed in parallel spaced relation to the axis of the cylinder, the member, being adapted to receive an elongated strip of heading data, slide members mounted on the member, indicator elements mounted to the slide members and extending toward the cylinder for denoting particular data positions on a mounted sheet thereby assisting in data interpolation when necessary, the frame including a pair of parallel spaced and transversely aligned lazy tong leg assemblies, each assembly having a pivot point, pin means connecting the pivot points and a rectangular frame removable fastened to the top 3. The device set forth in claim 2 wherein the handle means includes a handle wheel mounted in axially spaced relation to one transverse end of the cylinder.

4. The device set forth in claim 3 wherein the brake means includes an elongated bar rotatably mounted between the brace members, one end of the bar having ahandle element v for manipulating the brake means, and a friction pad connected to an opposite end of the bar, the pad being adapted to selectively engage the handle wheel thereby causing braking of the cylinder when the handle element is manipulated.

5. The device set forth in claim 1 wherein the indicator elements are in the form of arrow markers. 

1. A device for mounting a sheet having data imprinted thereon comprising a stationary frame, a horizontally orientated cylinder having transverse ends, the cylinder permitting mounting of a data sheet thereon, bearing means connecting the transverse ends of the cylinder and the frame to permit rotation of the cylinder, handle means connected to the transverse ends for facilitating rotation of the cylinder to a preselected position, brake means for retaining the cylinder in a preselected position, an elongated horizontally positioned member supported by the frame adjacent the cylinder, the member being disposed in parallel spaced relation to the axis of the cylinder, the member being adapted to receive an elongated strip of heading data, slide members mounted on the member, indicator elements mounted to the slide members and extending toward the cylinder for denoting particular data positions on a mounted sheet thereby assisting in data interpolation when necessary, the frame including a pair of parallel spaced and transversely aligned lazy tong leg assemblies, each assembly having a pivot point, pin means connecting the pivot points and a rectangular frame removable fastened to the top of the leg assemblies for connecting the bearing means thereto, wherein removal of the rectangular frame allows collapsing of the leg assemblies to form a more compact package.
 2. The device set forth in claim 1 wherein the frame further includes normally vertically positioned and parallel spaced brace members connected to the rectangular frame in longitudinally aligned relation for supporting the channel member.
 3. The device set forth in claim 2 wherein the handle means includes a handle wheel mounted in axially spaced relation to one transverse end of the cylinder.
 4. The device set forth in claim 3 wherein the brake means includes an elongated bar rotatably mounted between the brace members, one end of the bar having a handle element for manipulating the brake means, and a friction pad connected to an opposite end of the bar, the pad being adapted to selectively engage the handle wheel thereby causing braking of the cylinder when the handle element is manipulated.
 5. The device set forth in claim 1 wherein the indiCator elements are in the form of arrow markers. 